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for being an 03, a 07/08 head and valve components would be the best bet like fxrs said.. if you were to just rebuild the 03 head - cutting the valve seats, new guides that would put you close to the same price range as new head assembly.. plus the 07/08 has better porting, combustion chamber shape over the 03.. just my 2 cents..

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you can reuse the stock exhaust valves and springs, they just don't go bad on these bikes...you can use stock intakes or stainless...new springs of course..i dont knwo why you would want to buy a whole new head...just have the old head exhausts touched up and the intakes re-cut etc

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you can reuse the stock exhaust valves and springs, they just don't go bad on these bikes...you can use stock intakes or stainless...new springs of course..i dont knwo why you would want to buy a whole new head...just have the old head exhausts touched up and the intakes re-cut etc

i was commenting if the seats and guides needed to be recut/replaced then the price of which will pretty much be in the same ballpark as a new head which comes complete with new seats/guides.. you just know for sure you are starting off with a clean complete straight head...